- Grinding wheel optimised for use in foundries and fettling shops for cast iron and aluminium with high grinding performance and very long tool life. - Materials that can be worked: grey/nodular cast iron (GG/GJL, GGG/GJS), casting scale with sand contamination and metal contamination, hard aluminium alloys. - Applications: surface grinding, chamfering, deburring. - Abrasive: Special aluminium oxide A and silicon carbide C.